It makes up the vast majority of the matter in the Universe, but we have no idea what it is. Now, as Marcus Chown reveals, a hidden realm of dark matter could exist right under our noses.
We round up the gadgets and gizmos that are getting us excited this month...
Ahead of his Time Scanners show on the National Geographic Channel, structural engineer Steve Burrows reveals some of the design secrets of Machu Picchu.
Theories of science have ignored time... until now. A new idea reveals how it created the Universe - and you, writes Robert Matthews.
Ahead of his Time Scanners show on the National Geographic Channel, structural engineer Steve Burrows reveals some of the secrets of the Colosseum's design.
We preview Intel's upcoming digital assistant, Jarvis - a virtual friend housed in an earpiece that sounds straight out of a science fiction film.
Ahead of his Time Scanners show on the National Geographic Channel, structural engineer Steve Burrows tells us how Egypt's iconic pyramids were built to last for thousands of years.
We take to the cobbled streets of Bristol to put Ford's new automated parking system through its paces.
We get our hands on the Tactus touchscreen, which grows its own buttons before your very eyes.
Ahead of his Time Scanners show on the National Geographic Channel, structural engineer Steve Burrows tells us how the magnificent sandstone city of Petra was built.
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Gadget Show Live Preview
Here's a sneak preview of some of the exciting tech and accessories which will be exhibiting in April 2015
Education guide 2015
A round-up of some of the postgraduate and short courses available in science subjects
Astronomy in 2015
Fuel your stargazing passions with these courses and accessories
Science of Sound 2015
The Latest In Sound And Technology.
The Astronomers Retailer Guide
There’s no better place to buy than from a specialist retailer
Science Festival Guide 2015
A pick of the best science festivals across the UK
Did you know?
97% of the Earth's water is salty...
“What is the biggest known star?” and “How do fans make you feel cooler?” BBC Click Radio presenter Gareth Mitchell answers life's big questions
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The BBC Focus team taste the world's smelliest foods: surströmming, century eggs and durian.
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